COMMON: Make the two INI save file functions take a String reference
SCUMM: Make all HE saves prepend the target name

This makes HE follow the ScummVM convention of using the target name everywhere. It also fixes having more than one team in both soccer and football.

Loading old saves will still work and they will be tried if the newer save names are not found.
Merge pull request #366 from clone2727/he-saves-target-name

RFC: Make HE games use the target name in all save files